Fuel economizer



June 26, 1923.

P. S. L. WEST FUEL ECONOMIZER Filed Feb. 11. 1922 3 Sheets-Sheet l mvzlirron ATTORNEY wrmssae's.

Junai) 1923. 1,460,297

P. S. ,L. WEST FUEL ECONQMIZER Filed Feb. 11, 1922 3 Sheets-Sheet 2 IIIKIIHIIIHIHIHIHIHIHI HIHIHIHIEHBIHIHIBIHI P/SLT Vesf INVENTOR I WITNESSES ATTORNEY June 26, 1-923.

P15. L. WEST FUEL ECONQMI'ZER 3 Sheets -Sheet 5 Filed Feb. 11, 1922 r u u n m w a INVENTOR 'paLw sz ATTORNEY Patented June 26, 1923.

PETER STEPHEN LEE WEST, OF BROOKLYN, NEW YORK.

FUEL ECONOMIZER.

Application filed February 11, 1922. Serial No. 535,895.

T aZZ whom it may concern.

Be it known that T, PETER STEPHEN LEE Wns'r, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Fuel Economizers, of which the following is a specification.

This invention relates to improvements in fuel economizers and has for an object the provision of a device which may be applied to stoves, furnaces and the like, whereby unconsumed gases or products of combustion will be returned to the combustion chamber for a more thorough consumption.

Another object of the invention is the provision of a fuel economizer in which the unconsumed and the burned gases are separated, and'the former returned to the combustion chamber while the latter are permitted to pass off to the atmosphere in the usual manner.

Another object is the provision of means for reheating such gases which might in any manner become cooled. before they are returned to the combustion chamber and for mixing preheated air with the gases to insure proper combustion.

With the above and other objects in view, the invention further includes the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings Figure 1 is an end elevation of a stove with the invention applied.

Figure 2 is a horizontal section.

Figure 3 is a section on the line 3-3 of Figure 2.

Figure 4 is a similar view looking in an opposite direction to Figure 3. r

Figure 5 is a section on the line 5-5 of Figure 2.

Figure 6 is a vertical longittidinal section through the carbureter.

Figure 7 is a detail sectional view showing the valve'for controlling the admission of gases to the carbureter.

Referring in detail to the drawings, wherein like characters of reference denote corresponding parts, the reference character 10 indicates a stove, the fire box or combustion chamber of which is indicated at 11 and the ash pit at 12.-

The invention which is designed for insertlon in the combustion chamber 11 includes a casing 13 of preferably rectangular shape and which is shown as located at one end of the combustion chamber and extending from the top of the ash pit to the top of the stove. The casing 13 is divided into a lower chamber 14 and an upper chamber 16 and extending downwardly through the top of the casing is a pipe 17. This pipe is provided with an extension 15, which communicates with the combustion chamber 11, and the pipe 17 is providedwith an opening 19, whereby communication is established with the chamber 16, while the end of the extension 15 which communicates with the combustion chamber 11, is covered by a screen 20.

The smoke pipe of the stove is indicated at 21 and is provided with a. damper 22 for controlling the draft. The pipe 21 communicates with the upper end of the pipe 17 through the medium of a pipe 23, the last mentioned pipe being also provided witha damper, as indicated at 24. An additional pipe 25 has one end in communication with the lower end of the pipe 21, while its opposite end extends into the chamber 14 of the casing 13.

Extending longitudinally along the top of the combustion chamber is a mixing device or carbureter 26. This carbureter is divided into a lower compartment 27 and an upper compartment 28, the said compartments being divided by an intermediate compart ment 29. Communication between the compartments 27 and 29 is established through one or more openings 30, while one ormore openings 31 serve to establish communication between the compartment 28 and the compartment 29. The compartment 27 is in communication with the atmosphere through the medium of spaced openings 32, .which openings are controlled by a slide damper 33. Communication between the compartment 28 and the interior of the combustion chamber is established through the medium of spaced openings 34. One end of the compartment 28 is in communication with the upper'portion ofthe chamber 16 and this communication is controlled by a valve 35.

Communicating with the lower portion of the chamber 16 is one end of a pipe 36. The opposite end of this pipe communicates with a valve 37 and the latter has communication with one end of the compartment 28 of the carbureter through a pipe 38.

In the operation of the invention, when fire within the stove is first started, the damper 24 in the pipe 23 is opened and the damper 22 in the pipe 21 closed and the products of combustion will pass from the combustion chamber 11 through the screened opening 20, the extension 15 into the pipe 17 through the opening 18 and will pass through the pipe 23 and the pipe 21 tothe atmosphere. lVhen the fuel is burning freely, the damper 2 1 is closed and the damper 22 opened, or partly opened and the gases and. products of combustion will pass from the chamber 11 through the opening 20, the chamber 15 and into the pipe?! through the opening 18. After entering the pipe 17, the gases will separate,the lighter or least consumed gases rising up ward and passing through the opening 19 into the chamber 16 and from this chamher through the valve 35 into the compartment 28 of the carbureter. The gases will then pass through the openings 34; into the combustion chamber. As the valve 35 through which the gases pass from the chamber 16 to the. carbureter is located near the top of the said chamber, only the warmer gases will pass through this valve. The cooler gases will enter the pipe 36 which is located near the bottom of the cl'iamber 16 and in passing through this pipe and the valve 37 to the compartment 28 of the carbureter through the pipe 38, these gases will be reheated so as to pass from the carbureter to the combustion chamber in a properly heated state.

In order to provide a proper mixture and aidin the combustion of the gases, the slide 33 is adjusted so that air may enter through the openings 32 and pass into the compartment 27 of the carbureter, where it will be initially heated before passing through the opening or openings 30 into the compartment 29. In this compartment the air will be further heated before reaching the compartment 28 through the opening or openings 31 and in this last mentioned compartment it will be mixed with the heated gases before passing into the combustion chamber. It is not necessary that the gases from the chamber 16 be reheated before entering the carbureter, this reheating being utilized when it is desired to obtain an intensely hot fire. The use of the reheating means may be controlled through the medium of the valve 37.

The invention is susceptible of variou changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claims.

Having described the invention what is claimed is 1. The combination with a fire box, of a casing located therein, separate compartments formed within the casing, a pipe extending downwardly through the top of the casing, means whereby communication is established between the fire box and pipe through one of the compartments, means whereby communication is established between the pipe and fire box to permit the lighter gases to return to the latter and means whereby the heavier gases will be conducted to the atmosphere.

2. The combination with a fire box, of a casing located therein, separate compartments formed within the casing, a pipe extending downwardly through the top of the casing, means whereby communication is established between the fire box and pipe through one of the compartments, means whereby communication is established between the pipe and another compartment to permit the lighter gases to pass into the latter, means whereby the heavier gases will be conducted to the atmosphere and means for returning the lighter gases to thefire box.

3. The combination with a fire box, of a casing located therein, separate compartments formed within the casing, a pipe extending downwardly through the top of the casing, means whereby communication is estabiished between the fire box and pipe through one of the compartments, means whereby communication is established between the pipe and another compartment to permit the lighter gases to pass into the latter, means whereby the heavier gases will be conducted to the atmosphere and means in cluding a mixing chamber for returning the lighter gases to the fire box.

4. The combination with a fire box, of a casing located therein, separate compart ments formed within the casing, a pipe extending downwardly through the top of the casing, means whereby communication is established between the fire box and pipe through one of the compartments, means whereby communication is established between the pipe and another compartment to permit the lighter gases to pass into the latter, means whereby the heavier gases will be conducted to the atmosphere and means including a damper controlled mixing chamber located within the fire box and communicating with the casing for returning the lighter gases to the fire box.

5. The combination with a fire box, of a casing located therein, separate compartments formed within the'casing, a pipe extending downwardly through the top of the casing, means whereby communication is established between the fire box and pipe through one of the compartments, means whereby communication is established between the pipe and another compartment to permit the lighter gases to pass into the latter, means whereby the heavier gases will be conducted to the atmosphere, means for returning the lighter gases to the fire box, said means including a mixing chamber, the latter including a lower inlet compartment, an upper outlet compartment and an intermediate compartment.

6. The combination with a fire box, of a casing located therein, separate compartments formed within the casing, a pipe extending downwardly through the top ofthe casing, means whereby communication is established between the fire box and pipe through one of the compartments, means whereby communication is established between the pipe and another compartment to permit the lighter gases to pass into the latter, means whereby the heavier gases will be conducted to the atmosphere, a mixing chamber having communication with the upper portion of one of the casing compartments, means whereby air may be admitted to the mixing chamber For mixture with the gases of said. compartment and delivered to the tire box and a pipe establishing communication between the mixing chamber and the lower part of said compartment. whereby all of the unconsumed gases will be returned to the fire box.

7. The combination with a fire box, of a casing located therein, separate compartments formed within the casing, a pipe extending downwardly from, the top of the casing, means whereby communication is established between the fire box and pipe through one of the compartments, means whereby communication is established be tween the pipe and another compartment to permit the lighter gases to pass to the latter, means whereby the heavier gases will be conducted to the atmosphere, a mixing chamber for mixture with the gases from said compartment and delivered to the fire box and a pipe establishingcommunication between the mixing chamber and the lower permit the lighter gases to pass into the latter, means whereby the heavier gases will be conducted to the atmosphere, a mixing chamber, said mixing chamber including a lower slide controlled inlet compartment, an upper outlet compartment and an intermediate compartment.

In testimony whereof I a-flix my signature.

PETER STEPHEN LEE "WEST. 

